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Colour of a colloidal solution depends upon particles size and also the direction in which it is being viewed.

Answer: both particle size and the direction in which it is being viewed

Colour of a colloidal solution depends upon particles size and also the direction in which it is being viewed. For eg, diluted milk gives a bluish tinge in the reflected light and a reddish tint in the transmitted light.

Colour of a colloidal solution depends upon particle size and also the direction in which it is being viewed . For eg , diluted milk gives a bluish tinge in the reflected light and a reddish tint in the transmitted light .